Widget Bar 1

Widget Bar 2

Widget Bar 3

Footer Module

4. Create a Page named say, Home and select Home layout for this in the Custom Layout meta box. This page can be left blank.

5. Go to Settings -> Reading. Set Home as the Front page.

6. Visit your site's homepage and you should see the basic structure similar to that of demo site. Hover on Builder in the top WordPress bar and click on Manage Widgets for this Layout. Add your desired widgets in the sidebars.